STEM Olympiad Exam Instructions: Exam Format: Multiple-Choice Duration: 1 hours General Instructions: Materials: You are allowed to have with you during the exam, as specified by your instructor. Communication: You are not allowed to communicate with any other person during the exam. This includes talking, texting, or using any messaging apps. Technology: Ensure a stable internet connection and use a compatible browser. Make sure your device's battery is fully charged or plugged in. Plagiarism: Any form of plagiarism or cheating is strictly prohibited. This includes copying from external sources or using unauthorized aids. Browser Tabs: Please close all unnecessary browser tabs or windows, as the exam may be monitored. Exam Specifics: Question Format: This exam consists of multiple-choice questions. Number of Questions: There are a total of 36 questions in this exam. Scoring: Basic Section question is worth 2 points and Performer Section is worth 4 Points. The total exam score is 80. Submission: Once you answer all questions, click the "Submit" button to finalize your answers. Navigation: You can navigate between questions using the provided navigation buttons Please follow these instructions carefully during the online exam. If you have any concerns or technical issues, contact the designated support person or email address provided for assistance. Good luck! 1. Secction-A Basic Section None 2. In which of the following places of India geothermal energy sources have been found? Godavari Delta Himalayas West Coast All of the above None 3. Recently, which country has become India’s second-largest Liquefied Natural Gas (LNG) supplier? Iraq Iran Australia Us None 4. Acetylene and synthesis gas are examples of __________ Primary gaseous fuels Gaseous fuels Secondary gaseous fuels Liquid fuels None 5. . Which disorder is caused by the degeneration of neurons in the centralnervous system and is characterised by tremors and difficulty in movement and coordination? Alzheimer's disease Parkinson's disease Multiple sclerosis Epilepsy None 6. The image formed by retina of human eye is Virtual and erect Real and inverted Virtual and inverted Real and erect None 7. ‘X’ is a rectangular coil consisting of a large number of turns of copper wire wound over a soft iron core in an a.c. generator. Identify X. Slip ring Armature Copper brushes Field magnet None 8. An alpha particle is diverted towards west is deflected towards north by a field. The field is magnetic. What will be the direction of field? Towards south towards east downward upward None 9. If VA and VVB are the potentials of the two points A and B, what will be the correct relation between the electric field and the potential difference between the points? The distance between the points is d. . VA-VB=Ed VB-VA=Ed VA-VB=E/d VA-VB=d/e None 10. What is the result of the following code? 'True' 'False' 'AttributeError' 'None' None 11. . In supervised learning, what does the term "label" refer to? The input data used to train the model The target output that the model is trying to predict The algorithm used to train the model The process of adjusting the weights of the model None 12. . Which metric is commonly used to evaluate the performance of a classification model? Mean Squared Error R-squared Accuracy Confusion Matrix None 13. What is the purpose of a Convolutional Neural Network (CNN) in computer vision? To convert text into images To detect and classify features in images To compress images for storage To generate 3D models from 2D images None 14. What does the term "stemming" refer to in text preprocessing? . Converting words to their base or root form Removing punctuation and special characters Normalizing text by converting it to lowercase Removing stop words from the text None 15. Which of these enzymes in glycolysis do not take part in an irreversible reaction? . Hexokinase Phosphofructokinase Pyruvate kinase Glucokinase None 16. ___ores are seperated by leaching method. Sulphide Carbonate Iron Silver None 17. Electrolyte from which aluminium is extracted has___% of alumina,___% of cryolite,___% of flurospar in it. 30, 60,20 70,60,20 20,70,20 20,60,20 None 18. Al2O3 + 2NaOH → …… + H2O Al(OH)3 Na2O NaAlO2 AlNaO2 None 19. . Which of tire following are not ionic compounds?(a) KCl (b) HCl (c) CCl4 (d) NaCl . (i) and (ii) (ii) and (iii) (iii) and (iv) (i) and (iii) None 20. . In a right-angled triangle ABC, if angle B = 90∘90∘ and AB = 5 cm, BC = 12 cm, then what is the value of sin A? 5/12 12/5 5/13 12/13 None 21. f x = a, y = b is the solution of the equations x + y = 5 and 2x – 3y = 4, then the values of a and b are respectively 6,-1 2,3 1,4 19/5, 6/5 None 22. The equation 2x² + kx + 3 = 0 has two equal roots, then the value of k is ±√6 ± 4 ±3√2 ±2√6 None 23. If the roots of ax2 + bx + c = 0 are in the ratio m : n, then mna² = (m + n) c² mnb² = (m + n) ac mn b² = (m + n)² ac mnb² = (m – n)² ac None 24. The mean of following distribution is: 15.6 17 14.8 16.4 None 25. If a coin is tossed 3 times, what is the probability of getting 2 heads and 1 tail? 1/8 3/8 1/2 5/8 None 26. A right circular cylinder and a right circular cone have the same radius and the same volume. The ratio of the height of the cylinder to that of the cone is 3 : 5 2 : 5 03:01 01:03 None 27. The HCF and LCM of two numbers are 33 and 264 respectively. When the first number is completely divided by 2 the quotient is 33. The other number is: 66 130 132 196 None 28. . If 17th term of an A.P. exceeds its 10th term by 7. The common difference is: 1 2 3 4 None 29. Two cars start opposite places of a main road, 150 km apart. First car runs for 25 km and takes a right turn and then runs 15 km. It then turns left and then runs for another 25 km and then takes the direction back to reach the main road. In the mean time, due to minor break down the other car has run only 35 km along the main road.What would be the distance between two cars at this point ? 65 km 75 km 80 km 85 km None 30. Find the correct option for the blank space. 18 ,23 14, 19 16, 21 15 , 20 None 31. How many of the integers 1,2,………,120 are divisible by none of 2,5 and 7 ? 42 41 40 43 None 32. If "–" means "divided by", "+" means "multiplied by", "÷" means "added to", "x" means "subtracted from", then 11 ÷ 6 – 2 + 5 x 3 = ? 21 23 17 26 None 33. The number of persons who read magazine X only is thrice the number of persons who read magazine Y. The number of persons who read magazine Y only is thrice the number of persons who read magazine X. Then, which of the following conclusions can be drawn ? 1. The number of persons who read both the magazines is twice the number of persons who read only magazine X. 2. The total number of persons who read either one magazine or both the magazines is twice the number of persons who read both the magazines. Select the correct answer using the code given below: 1 Only 2 Only Both 1 and 2 Neither 1 nor 2 None 34. SECTION-B Performace section None 35. 33. Consider the following frequency distribution of the heights of 60 students of a class: The sum of the lower limit of the modal class and upper limit of the median class is 310 315 320 330 None 36. In a coding language , the letters of the English alphabet are arranged in such a manner that all the vowels are put in the end and the remaining letters are arranged from the first letter onwards. The rearranged alphabets are used to denote the position occupied by letters in the original alphabets. What is the code of META ? TEAM . PWLV LWPV QGYB None 37. Consider the following pattern of numbers: What is the number at ? In the above pattern ? 17 19 21 23 None 38. Out of a total of 120 musicians in a club, 5% can play all the three instruments, guitar, violin and flute. It so happens that the number of musicians who can play any two and only two of the above instruments is 30. The number of musicians who can play the guitar alone is 40. What is the total number of those who can play violin or flute alone ? 45 44 38 30 None You cannot switch tabs while taking this quiz!You are not allowed to switch tabs violation has been recorded.You cannot minimize full screen mode!You are not allowed to minimize full screen while taking this quiz, violation has been recorded.Access denied! To begin the quiz, please grant this quiz access to your camera.
